/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kie.workbench.common.stunner.core.client.canvas.controls;

import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvasHandler;

public abstract class AbstractCanvasHandlerControl<H extends AbstractCanvasHandler> implements CanvasControl<H> {

    protected H canvasHandler;

    protected abstract void doInit();

    protected abstract void doDestroy();

    @Override
    public void init(final H canvasHandler) {
        this.canvasHandler = canvasHandler;
        doInit();
    }

    @Override
    public void destroy() {
        doDestroy();
        this.canvasHandler = null;
    }
}
